125513515166 has 8 divisors (see below), whose sum is σ = 202752601464. Its totient is φ = 57929314680.

The previous prime is 125513515157. The next prime is 125513515189. The reversal of 125513515166 is 661515315521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2413721420 + ... + 2413721471.

It is an arithmetic number, because the mean of its divisors is an integer number (25344075183).

Almost surely, 2^125513515166 is an apocalyptic number.

125513515166 is a deficient number, since it is larger than the sum of its proper divisors (77239086298).

125513515166 is a wasteful number, since it uses less digits than its factorization.

125513515166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4827442906.

The product of its digits is 135000, while the sum is 41.

The spelling of 125513515166 in words is "one hundred twenty-five billion, five hundred thirteen million, five hundred fifteen thousand, one hundred sixty-six".